diff --git a/adapter/outbound/singmux.go b/adapter/outbound/singmux.go
index 55bd6ac3..44b03b64 100644
--- a/adapter/outbound/singmux.go
+++ b/adapter/outbound/singmux.go
@@ -2,6 +2,7 @@ package outbound
 
 import (
 	"context"
+	"time"
 
 	N "github.com/metacubex/mihomo/common/net"
 	"github.com/metacubex/mihomo/component/proxydialer"
@@ -28,6 +29,7 @@ type SingMuxOption struct {
 	Padding        bool         `proxy:"padding,omitempty"`
 	Statistic      bool         `proxy:"statistic,omitempty"`
 	OnlyTcp        bool         `proxy:"only-tcp,omitempty"`
+	TCPTimeout     int          `proxy:"tcp-timeout,omitempty"`
 	BrutalOpts     BrutalOption `proxy:"brutal-opts,omitempty"`
 }
 
@@ -103,6 +105,7 @@ func NewSingMux(option SingMuxOption, proxy ProxyAdapter) (ProxyAdapter, error)
 		MinStreams:     option.MinStreams,
 		MaxStreams:     option.MaxStreams,
 		Padding:        option.Padding,
+		TCPTimeout:     time.Duration(option.TCPTimeout) * time.Second,
 		Brutal: mux.BrutalOptions{
 			Enabled:    option.BrutalOpts.Enabled,
 			SendBPS:    StringToBps(option.BrutalOpts.Up),
diff --git a/go.mod b/go.mod
index 1291e49a..82039318 100644
--- a/go.mod
+++ b/go.mod
@@ -29,7 +29,7 @@ require (
 	github.com/metacubex/randv2 v0.2.0
 	github.com/metacubex/restls-client-go v0.1.7
 	github.com/metacubex/sing v0.5.7
-	github.com/metacubex/sing-mux v0.3.6
+	github.com/metacubex/sing-mux v0.3.7
 	github.com/metacubex/sing-quic v0.0.0-20260414034501-3ea3410d197a
 	github.com/metacubex/sing-shadowsocks v0.2.12
 	github.com/metacubex/sing-shadowsocks2 v0.2.7
diff --git a/go.sum b/go.sum
index 387e686b..47786440 100644
--- a/go.sum
+++ b/go.sum
@@ -125,8 +125,8 @@ github.com/metacubex/restls-client-go v0.1.7 h1:eCwiXCTQb5WJu9IlgYvDBA1OgrINv58d
 github.com/metacubex/restls-client-go v0.1.7/go.mod h1:BN/U52vPw7j8VTSh2vleD/MnmVKCov84mS5VcjVHH4g=
 github.com/metacubex/sing v0.5.7 h1:8OC+fhKFSv/l9ehEhJRaZZAOuthfZo68SteBVLe8QqM=
 github.com/metacubex/sing v0.5.7/go.mod h1:ypf0mjwlZm0sKdQSY+yQvmsbWa0hNPtkeqyRMGgoN+w=
-github.com/metacubex/sing-mux v0.3.6 h1:AIjxEz7pq+5DVoV9N5/xaQXz3cMSZR9PBvMRP9X3+A0=
-github.com/metacubex/sing-mux v0.3.6/go.mod h1:8bT7ZKT3clRrJjYc/x5CRYibC1TX/bK73a3r3+2E+Fc=
+github.com/metacubex/sing-mux v0.3.7 h1:CnsRQfxFOLNh8gZqbPVFVPNVWgq5paiLksI0tVJI5CY=
+github.com/metacubex/sing-mux v0.3.7/go.mod h1:8bT7ZKT3clRrJjYc/x5CRYibC1TX/bK73a3r3+2E+Fc=
 github.com/metacubex/sing-quic v0.0.0-20260414034501-3ea3410d197a h1:977o0ZYYbiQAGuOxql7Q6UN3rEy59OyAE0tELq4gZfI=
 github.com/metacubex/sing-quic v0.0.0-20260414034501-3ea3410d197a/go.mod h1:6ayFGfzzBE85csgQkM3gf4neFq6s0losHlPRSxY+nuk=
 github.com/metacubex/sing-shadowsocks v0.2.12 h1:Wqzo8bYXrK5aWqxu/TjlTnYZzAKtKsaFQBdr6IHFaBE=
diff --git a/listener/inbound/mux_test.go b/listener/inbound/mux_test.go
index 09facdb8..841797e6 100644
--- a/listener/inbound/mux_test.go
+++ b/listener/inbound/mux_test.go
@@ -28,10 +28,10 @@ func testSingMux(t *testing.T, tunnel *TestTunnel, out outbound.ProxyAdapter) {
 		for _, protocol := range singMuxProtocolList {
 			protocol := protocol
 			t.Run(protocol, func(t *testing.T) {
-				t.Parallel()
 				singMuxOption := outbound.SingMuxOption{
-					Enabled:  true,
-					Protocol: protocol,
+					Enabled:    true,
+					Protocol:   protocol,
+					TCPTimeout: 30, // set a timeout value that is slightly larger than the default
 				}
 				out, err := outbound.NewSingMux(singMuxOption, &notCloseProxyAdapter{out})
 				if !assert.NoError(t, err) {